313522840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:305

約数の個数: 128

約数和(自身を含む): 783820800

約数和(自身を除く): 470297960

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 31, 34, 40, 62, 68, 85, 107, 124, 136, 139, 155, 170, 214, 248, 278, 310, 340, 428, 527, 535, 556, 620, 680, 695, 856, 1054, 1070, 1112, 1240, 1390, 1819, 2108, 2140, 2363, 2635, 2780, 3317, 3638, 4216, 4280, 4309, 4726, 5270, 5560, 6634, 7276, 8618, 9095, 9452, 10540, 11815, 13268, 14552, 14873, 16585, 17236, 18190, 18904, 21080, 21545, 23630, 26536, 29746, 33170, 34472, 36380, 43090, 47260, 56389, 59492, 66340, 72760, 73253, 74365, 86180, 94520, 112778, 118984, 132680, 146506, 148730, 172360, 225556, 252841, 281945, 293012, 297460, 366265, 451112, 461063, 505682, 563890, 586024, 594920, 732530, 922126, 1011364, 1127780, 1264205, 1465060, 1844252, 2022728, 2255560, 2305315, 2528410, 2930120, 3688504, 4610630, 5056820, 7838071, 9221260, 10113640, 15676142, 18442520, 31352284, 39190355, 62704568, 78380710, 156761420, 313522840]

約数ペア:

[(1, 313522840), (2, 156761420), (4, 78380710), (5, 62704568), (8, 39190355), (10, 31352284), (17, 18442520), (20, 15676142), (31, 10113640), (34, 9221260), (40, 7838071), (62, 5056820), (68, 4610630), (85, 3688504), (107, 2930120), (124, 2528410), (136, 2305315), (139, 2255560), (155, 2022728), (170, 1844252), (214, 1465060), (248, 1264205), (278, 1127780), (310, 1011364), (340, 922126), (428, 732530), (527, 594920), (535, 586024), (556, 563890), (620, 505682), (680, 461063), (695, 451112), (856, 366265), (1054, 297460), (1070, 293012), (1112, 281945), (1240, 252841), (1390, 225556), (1819, 172360), (2108, 148730), (2140, 146506), (2363, 132680), (2635, 118984), (2780, 112778), (3317, 94520), (3638, 86180), (4216, 74365), (4280, 73253), (4309, 72760), (4726, 66340), (5270, 59492), (5560, 56389), (6634, 47260), (7276, 43090), (8618, 36380), (9095, 34472), (9452, 33170), (10540, 29746), (11815, 26536), (13268, 23630), (14552, 21545), (14873, 21080), (16585, 18904), (17236, 18190)]